Is specialized in designing, manufacturing for power transformers ,furnace transformers and reactor.

Type WDT4 single phase tap changer(delta connection) 1

Type WDT4 single phase tap changer(delta connection) 2

Type WDT4 single phase tap changer(delta connection)

This kind of switch applies to the single-phase combination oil-immersed transformer electrical power with rated voltage of 10KV-36KV, rated current of 63A-250A; the voltage-regulating mode are: central part, terminal point ncutral point, which can be dircctly fixed on the tank cover of the transformer, exchange under the off-circuit condition.

Type WDT4 single phase-tap changer(delta connection)

- Used in mineral oil or silicon oil

- Rated Voltage 10KV-36KV

- Rated current from 63A-250A

- Tapping position: 3-7

- Regulation 2.5% per position

Model Explanation
WST □ - □/□-□X□

W: off-circuit
S : three-phase or D for single phase
T : linear type tap changer
□: voltage regulation model
□: rated current
□: rated voltage
□: number of tapping heads
□: number of tapping position

Voltage Regulation Model
I : terminal point
II : central point
III : neutral point
IV : Y-△ conversion
V : series-parallel connection

Our Advantage

* High pressure capability
* Strong anti-aging ability
* Strong anti-lightning impact
* Strong protection
* Use smoothly
* Stable use

Rated voltage	Rated current	L	L1	L2	L3	L4	L5	N	H	H1	Reaulatin position
10kV	63A	270	147	113	67	99	24	3	100	78	Central
	125A	290	162	118	67	107	29	3	100	78
	250A	290	162	118	67	112	29	3	100	78
36kV	63A	338	215	114	67	103	24	3	120	98
	125A	380	228	128	67	107	34	3	120	98
	250A	380	228	128	67	112	34	3	120	98
10kV	63A	366	195	161	67	99	24	5	100	78
	125A	405	221	175	67	107	29	5	100	78
	250A	405	221	175	67	112	29	5	100	78
36kV	63A	441	266	166	67	103	24	5	120	98
	125A	516	296	196	67	107	34	5	120	98
	250A	516	296	196	67	112	34	5	120	98
10kV	63A	462	239	209	78	110	24	7	100	78
	125A	528	279	239	78	118	29	7	100	78
	250A	528	279	239	78	123	29	7	100	78
36kV	63A	532	314	209	78	114	24	7	120	98
	125A	588	329	234	78	123	29	7	120	98
	250A	588	329	234	78	128	29	7	120	98

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